1
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Bhattacharyya P, Chen W, Huang X, Chatterjee S, Huang B, Kobrin B, Lyu Y, Smart TJ, Block M, Wang E, Wang Z, Wu W, Hsieh S, Ma H, Mandyam S, Chen B, Davis E, Geballe ZM, Zu C, Struzhkin V, Jeanloz R, Moore JE, Cui T, Galli G, Halperin BI, Laumann CR, Yao NY. Imaging the Meissner effect in hydride superconductors using quantum sensors. Nature 2024; 627:73-79. [PMID: 38418887 DOI: 10.1038/s41586-024-07026-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 01/03/2024] [Indexed: 03/02/2024]
Abstract
By directly altering microscopic interactions, pressure provides a powerful tuning knob for the exploration of condensed phases and geophysical phenomena1. The megabar regime represents an interesting frontier, in which recent discoveries include high-temperature superconductors, as well as structural and valence phase transitions2-6. However, at such high pressures, many conventional measurement techniques fail. Here we demonstrate the ability to perform local magnetometry inside a diamond anvil cell with sub-micron spatial resolution at megabar pressures. Our approach uses a shallow layer of nitrogen-vacancy colour centres implanted directly within the anvil7-9; crucially, we choose a crystal cut compatible with the intrinsic symmetries of the nitrogen-vacancy centre to enable functionality at megabar pressures. We apply our technique to characterize a recently discovered hydride superconductor, CeH9 (ref. 10). By performing simultaneous magnetometry and electrical transport measurements, we observe the dual signatures of superconductivity: diamagnetism characteristic of the Meissner effect and a sharp drop of the resistance to near zero. By locally mapping both the diamagnetic response and flux trapping, we directly image the geometry of superconducting regions, showing marked inhomogeneities at the micron scale. Our work brings quantum sensing to the megabar frontier and enables the closed-loop optimization of superhydride materials synthesis.
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Affiliation(s)
- P Bhattacharyya
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - W Chen
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, China
| | - X Huang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, China
| | - S Chatterjee
- Department of Physics, University of California, Berkeley, CA, USA
- Department of Physics, Carnegie Mellon University, Pittsburgh, PA, USA
| | - B Huang
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - B Kobrin
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Y Lyu
- Department of Physics, University of California, Berkeley, CA, USA
| | - T J Smart
- Department of Physics, University of California, Berkeley, CA, USA
- Department of Earth and Planetary Science, University of California, Berkeley, CA, USA
| | - M Block
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - E Wang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Z Wang
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - W Wu
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - S Hsieh
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - H Ma
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - S Mandyam
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - B Chen
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - E Davis
- Department of Physics, University of California, Berkeley, CA, USA
| | - Z M Geballe
- Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC, USA
| | - C Zu
- Department of Physics, Washington University in St. Louis, St. Louis, MO, USA
| | - V Struzhkin
- Center for High Pressure Science and Technology Advanced Research, Shanghai, China
| | - R Jeanloz
- Department of Earth and Planetary Science, University of California, Berkeley, CA, USA
| | - J E Moore
- Department of Physics, University of California, Berkeley, CA, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - T Cui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, China
- School of Physical Science and Technology, Ningbo University, Ningbo, China
| | - G Galli
- Department of Chemistry, University of Chicago, Chicago, IL, USA
- Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, Lemont, IL, USA
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - B I Halperin
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - C R Laumann
- Department of Physics, Boston University, Boston, MA, USA
| | - N Y Yao
- Department of Physics, University of California, Berkeley, CA, USA.
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Department of Physics, Harvard University, Cambridge, MA, USA.
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2
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Sherman NE, Avdoshkin A, Moore JE. Universality of Critical Dynamics with Finite Entanglement. Phys Rev Lett 2023; 131:106501. [PMID: 37739353 DOI: 10.1103/physrevlett.131.106501] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 07/28/2023] [Indexed: 09/24/2023]
Abstract
When a system is swept through a quantum critical point, the quantum Kibble-Zurek mechanism makes universal predictions for quantities such as the number and energy of excitations produced. This mechanism is now being used to obtain critical exponents on emerging quantum computers and emulators, which in some cases can be compared to matrix product state (MPS) numerical studies. However, the mechanism is modified when the divergence of entanglement entropy required for a faithful description of many quantum critical points is not fully captured by the experiment or classical calculation. In this Letter, we study how low-energy dynamics of quantum systems near criticality are modified by finite entanglement, using conformally invariant critical points described approximately by a MPS as an example. We derive that the effect of finite entanglement on a Kibble-Zurek process is captured by a dimensionless scaling function of the ratio of two length scales, one determined dynamically and one by the entanglement restriction. Numerically we confirm first that dynamics at finite bond dimension χ is independent of the algorithm chosen, then obtain scaling collapses for sweeps in the transverse field Ising model and the three-state Potts model. Our result establishes the precise role played by entanglement in time-dependent critical phenomena and has direct implications for quantum state preparation and classical simulation of quantum states.
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Affiliation(s)
- N E Sherman
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - A Avdoshkin
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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3
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Chirolli L, Yao NY, Moore JE. SWAP Gate between a Majorana Qubit and a Parity-Protected Superconducting Qubit. Phys Rev Lett 2022; 129:177701. [PMID: 36332252 DOI: 10.1103/physrevlett.129.177701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
High fidelity quantum information processing requires a combination of fast gates and long-lived quantum memories. In this Letter, we propose a hybrid architecture, where a parity-protected superconducting qubit is directly coupled to a Majorana qubit, which plays the role of a quantum memory. The superconducting qubit is based upon a π-periodic Josephson junction realized with gate-tunable semiconducting wires, where the tunneling of individual Cooper pairs is suppressed. One of the wires additionally contains four Majorana zero modes that define a qubit. We demonstrate that this enables the implementation of a SWAP gate, allowing for the transduction of quantum information between the topological and conventional qubit. This architecture combines fast gates, which can be realized with the superconducting qubit, with a topologically protected Majorana memory.
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Affiliation(s)
- Luca Chirolli
- Department of Physics, University of California Berkeley, Berkeley, California 94720, USA
- Istituto Nanoscienze-CNR, I-56127 Pisa, Italy
| | - Norman Y Yao
- Department of Physics, University of California Berkeley, Berkeley, California 94720, USA
- Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Joel E Moore
- Department of Physics, University of California Berkeley, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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4
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Brown CD, Chang SW, Schwarz MN, Leung TH, Kozii V, Avdoshkin A, Moore JE, Stamper-Kurn D. Direct geometric probe of singularities in band structure. Science 2022; 377:1319-1322. [DOI: 10.1126/science.abm6442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A quantum system’s energy landscape may have points where multiple energy surfaces are degenerate and that exhibit singular geometry of the wave function manifold, with major consequences for the system’s properties. Ultracold atoms in optical lattices have been used to indirectly characterize such points in the band structure. We measured the non-Abelian transformation produced by transport directly through the singularities. We accelerated atoms along a quasi-momentum trajectory that enters, turns, and then exits the singularities at linear and quadratic band-touching points of a honeycomb lattice. Measurements after transport identified the topological winding numbers of these singularities to be 1 and 2, respectively. Our work introduces a distinct method for probing singularities that enables the study of non-Dirac singularities in ultracold-atom quantum simulators.
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Affiliation(s)
- Charles D. Brown
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Challenge Institute for Quantum Computation, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of Physics, Yale University, New Haven, CT 06520, USA
| | - Shao-Wen Chang
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Challenge Institute for Quantum Computation, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Malte N. Schwarz
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Challenge Institute for Quantum Computation, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Tsz-Him Leung
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Challenge Institute for Quantum Computation, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Vladyslav Kozii
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Alexander Avdoshkin
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Joel E. Moore
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Dan Stamper-Kurn
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
- Challenge Institute for Quantum Computation, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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5
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Ross J, Ramsay DP, Sutton-Smith LJ, Willink RD, Moore JE. Residual neuromuscular blockade in the ICU: a prospective observational study and national survey. Anaesthesia 2022; 77:991-998. [PMID: 35837762 DOI: 10.1111/anae.15789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2022] [Indexed: 12/23/2022]
Abstract
Residual neuromuscular blockade is associated with significant morbidity. It has been widely studied in anaesthesia; however, the incidence of residual neuromuscular blockade in patients managed in the ICU is unknown. We conducted a prospective observational study in a tertiary ICU to determine the incidence of residual neuromuscular blockade using quantitative accelerographic monitoring. We tested for residual neuromuscular blockade (defined as a train-of-four ratio < 0.9) before cessation of sedation in anticipation of tracheal extubation. We also surveyed 16 other ICUs in New Zealand to determine their use of neuromuscular monitoring. A total of 191 patients were included in the final analysis. The incidence (95%CI) of residual neuromuscular blockade was 43% (36-50%), with a similar incidence observed in non-postoperative and postoperative patients. There was a lower risk of residual neuromuscular blockade with atracurium than rocuronium (risk ratio (95%CI) of 0.39 (0.12-0.78)) and a higher risk with pancuronium than rocuronium (1.59 (1.06-2.49)). Our survey shows that, in New Zealand ICUs, monitoring of neuromuscular function is rarely carried out before tracheal extubation. When neuromuscular monitoring is undertaken, it is based on individual clinician suspicion and performed using qualitative measurements. No ICU reported using a quantitative monitor or a clinical guideline. The results demonstrate a high incidence of residual neuromuscular blockade in our ICU patients and identify the type of neuromuscular blocking drug as a possible risk factor. Monitoring neuromuscular function before tracheal extubation is not currently the standard of care in New Zealand ICUs. These data suggest that residual neuromuscular blockade may be an under-recognised problem in ICU practice.
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Affiliation(s)
- J Ross
- Department of Anaesthesia, Wellington Regional Hospital, Wellington, New Zealand
| | - D P Ramsay
- Department of Anaesthesia, Wellington Regional Hospital, Wellington, New Zealand
| | - L J Sutton-Smith
- Intensive Care Services, Wellington Regional Hospital, Wellington, New Zealand
| | - R D Willink
- Dean's Department, University of Otago, Wellington, New Zealand
| | - J E Moore
- Intensive Care, Medical Research Institute of New Zealand, Wellington, New Zealand
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6
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Zhu T, Ruan W, Wang YQ, Tsai HZ, Wang S, Zhang C, Wang T, Liou F, Watanabe K, Taniguchi T, Neaton JB, Weber-Bargioni A, Zettl A, Qiu ZQ, Zhang G, Wang F, Moore JE, Crommie MF. Imaging gate-tunable Tomonaga-Luttinger liquids in 1H-MoSe 2 mirror twin boundaries. Nat Mater 2022; 21:748-753. [PMID: 35710632 DOI: 10.1038/s41563-022-01277-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
One-dimensional electron systems exhibit fundamentally different properties than higher-dimensional systems. For example, electron-electron interactions in one-dimensional electron systems have been predicted to induce Tomonaga-Luttinger liquid behaviour. Naturally occurring grain boundaries in single-layer transition metal dichalcogenides exhibit one-dimensional conducting channels that have been proposed to host Tomonaga-Luttinger liquids, but charge density wave physics has also been suggested to explain their behaviour. Clear identification of the electronic ground state of this system has been hampered by an inability to electrostatically gate such boundaries and tune their charge carrier concentration. Here we present a scanning tunnelling microscopy and spectroscopy study of gate-tunable mirror twin boundaries in single-layer 1H-MoSe2 devices. Gating enables scanning tunnelling microscopy and spectroscopy for different mirror twin boundary electron densities, thus allowing precise characterization of electron-electron interaction effects. Visualization of the resulting mirror twin boundary electronic structure allows unambiguous identification of collective density wave excitations having two velocities, in quantitative agreement with the spin-charge separation predicted by finite-length Tomonaga-Luttinger liquid theory.
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Affiliation(s)
- Tiancong Zhu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
| | - Wei Ruan
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Department of Physics, University of California, Berkeley, CA, USA.
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai, China.
| | - Yan-Qi Wang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
| | - Hsin-Zon Tsai
- Department of Physics, University of California, Berkeley, CA, USA
| | - Shuopei Wang
- Beijing National Laboratory for Condensed Matter Physics, Key Laboratory for Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Canxun Zhang
- Department of Physics, University of California, Berkeley, CA, USA
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Tianye Wang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
| | - Franklin Liou
- Department of Physics, University of California, Berkeley, CA, USA
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
| | - Takashi Taniguchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
| | - Jeffrey B Neaton
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
| | - Alexander Weber-Bargioni
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Alex Zettl
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Z Q Qiu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Physics, University of California, Berkeley, CA, USA
| | - Guangyu Zhang
- Beijing National Laboratory for Condensed Matter Physics, Key Laboratory for Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, China
- Songshan Lake Materials Laboratory, Dongguan, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Feng Wang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Department of Physics, University of California, Berkeley, CA, USA.
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| | - Joel E Moore
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Department of Physics, University of California, Berkeley, CA, USA.
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| | - Michael F Crommie
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
- Department of Physics, University of California, Berkeley, CA, USA.
- Kavli Energy Nano Sciences Institute, University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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7
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Moore JE, Moore PJA, Millar BC. GREEN EGGS AND HAM BY DR. SEUSS: EMPLOYING DIGITAL TOOLS TO IMPROVE READABILITY OF PATIENT-FACING MATERIALS. Ulster Med J 2022; 91:50. [PMID: 35169340 PMCID: PMC8835417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- JE Moore
- Northern Ireland Public Health Laboratory, Belfast City Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK
| | - PJA Moore
- Department of Acute Internal Medicine, Antrim Area Hospital, Antrim, Northern Ireland, UK
| | - BC Millar
- Northern Ireland Public Health Laboratory, Belfast City Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK
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8
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Ishimoto K, Hatanaka N, Otani S, Maeda S, Xu B, Yasugi M, Moore JE, Suzuki M, Nakagawa S, Yamasaki S. Tea crude extracts effectively inactivate severe acute respiratory syndrome coronavirus 2. Lett Appl Microbiol 2021; 74:2-7. [PMID: 34695222 PMCID: PMC8661916 DOI: 10.1111/lam.13591] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/03/2021] [Accepted: 10/19/2021] [Indexed: 12/29/2022]
Abstract
It is well known that black and green tea extracts, particularly polyphenols, have antimicrobial activity against various pathogenic microbes including viruses. However, there is limited data on the antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), which emerged rapidly in China in late 2019 and which has been responsible for coronavirus disease 2019 (COVID‐19) pandemic globally. In this study, 20 compounds and three extracts were obtained from black and green tea and found that three tea extracts showed significant antiviral activity against SARS‐CoV‐2, whereby the viral titre decreased about 5 logs TCID50 per ml by 1·375 mg ml−1 black tea extract and two‐fold diluted tea bag infusion obtained from black tea when incubated at 25°C for 10 s. However, when concentrations of black and green tea extracts were equally adjusted to 344 µg ml−1, green tea extracts showed more antiviral activity against SARS‐CoV‐2. This simple and highly respected beverage may be a cheap and widely acceptable means to reduce SARS‐CoV‐2 viral burden in the mouth and upper gastrointestinal and respiratory tracts in developed as well as developing countries.
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Affiliation(s)
- K Ishimoto
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan
| | - N Hatanaka
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - S Otani
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Maeda
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - B Xu
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - M Yasugi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - J E Moore
- Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK
| | - M Suzuki
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Nakagawa
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan.,Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - S Yamasaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
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9
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Huang Y, Moore JE. Neural Network Representation of Tensor Network and Chiral States. Phys Rev Lett 2021; 127:170601. [PMID: 34739298 DOI: 10.1103/physrevlett.127.170601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
We study the representational power of Boltzmann machines (a type of neural network) in quantum many-body systems. We prove that any (local) tensor network state has a (local) neural network representation. The construction is almost optimal in the sense that the number of parameters in the neural network representation is almost linear in the number of nonzero parameters in the tensor network representation. Despite the difficulty of representing (gapped) chiral topological states with local tensor networks, we construct a quasilocal neural network representation for a chiral p-wave superconductor. These results demonstrate the power of Boltzmann machines.
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Affiliation(s)
- Yichen Huang
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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10
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Moore JE, Millar BC. Improving IPC health literacy through better communication: investigation of the readability of IPC patient information leaflets from several sources. J Hosp Infect 2021; 118:15-19. [PMID: 34536531 DOI: 10.1016/j.jhin.2021.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 11/16/2022]
Affiliation(s)
- J E Moore
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, UK.
| | - B C Millar
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, UK
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11
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Dupont M, Sherman NE, Moore JE. Spatiotemporal Crossover between Low- and High-Temperature Dynamical Regimes in the Quantum Heisenberg Magnet. Phys Rev Lett 2021; 127:107201. [PMID: 34533348 DOI: 10.1103/physrevlett.127.107201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
The stranglehold of low temperatures on fascinating quantum phenomena in one-dimensional quantum magnets has been challenged recently by the discovery of anomalous spin transport at high temperatures. Whereas both regimes have been investigated separately, no study has attempted to reconcile them. For instance, the paradigmatic quantum Heisenberg spin-1/2 chain falls at low temperature within the Tomonaga-Luttinger liquid framework, while its high-temperature dynamics is superdiffusive and relates to the Kardar-Parisi-Zhang universality class in 1+1 dimensions. This Letter aims at reconciling the two regimes. Building on large-scale matrix product state simulations, we find that they are connected by a temperature-dependent spatiotemporal crossover. As the temperature T is reduced, we show that the onset of superdiffusion takes place at longer length and timescales ∝1/T. This prediction has direct consequences for experiments including nuclear magnetic resonance: it is consistent with earlier measurements on the nearly ideal Heisenberg S=1/2 chain compound Sr_{2}CuO_{3}, yet calls for new and dedicated experiments.
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Affiliation(s)
- Maxime Dupont
- Department of Physics, University of California, Berkeley, California 94720, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Nicholas E Sherman
- Department of Physics, University of California, Berkeley, California 94720, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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12
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Cookmeyer T, Motruk J, Moore JE. Four-Spin Terms and the Origin of the Chiral Spin Liquid in Mott Insulators on the Triangular Lattice. Phys Rev Lett 2021; 127:087201. [PMID: 34477420 DOI: 10.1103/physrevlett.127.087201] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
At strong repulsion, the triangular-lattice Hubbard model is described by s=1/2 spins with nearest-neighbor antiferromagnetic Heisenberg interactions and exhibits conventional 120° order. Using the infinite density matrix renormalization group and exact diagonalization, we study the effect of the additional four-spin interactions naturally generated from the underlying Mott-insulator physics of electrons as the repulsion decreases. Although these interactions have historically been connected with a gapless ground state with emergent spinon Fermi surface, we find that, at physically relevant parameters, they stabilize a chiral spin liquid (CSL) of Kalmeyer-Laughlin (KL) type, clarifying observations in recent studies of the Hubbard model. We then present a self-consistent solution based on a mean-field rewriting of the interaction to obtain a Hamiltonian with similarities to the parent Hamiltonian of the KL state, providing a physical understanding for the origin of the CSL.
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Affiliation(s)
- Tessa Cookmeyer
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Johannes Motruk
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Theoretical Physics, University of Geneva, Quai Ernest-Ansermet 30, 1205 Geneva, Switzerland
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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13
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Millar BC, Rao JR, Moore JE. Fighting antimicrobial resistance (AMR): Chinese herbal medicine as a source of novel antimicrobials - an update. Lett Appl Microbiol 2021; 73:400-407. [PMID: 34219247 DOI: 10.1111/lam.13534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 06/22/2021] [Accepted: 06/25/2021] [Indexed: 11/28/2022]
Abstract
Antimicrobial resistance (AMR) has now emerged as a global public health crisis, requiring the discovery of new and novel antimicrobial compounds, that may be precursors of future therapeutic antibiotics. Chinese Herbal Medicine (CHM) comes with a rich pedigree of holistic and empirical usage in Asia for the last 5000 years. Extracts of Anemarrhena asphodeloides Bunge, Angelica sinensis (Oliv.) Diels, Dianthus superbus L. Forsythiae fructus (Lian Qiao), Lonicerae flos (Jin Yin Hua), Naemorhedi cornu, Platycladus orientalis Franco, Polygonum aviculare, Polygonum cuspidatum, Poria cocos (Schw.), Rehmannia glutinosa (Gaertn.) DC, Rheum palmatum, Salvia miltiorrhiza Bunge, Scutellaria barbata, Scutellariae radix (Huang Qin) and Ursi fel (Xiong Dan) have shown to have antimicrobial properties against clinically significant Gram-negative and Gram-positive bacterial pathogens, as well as the mycobacteria (TB and non-tuberculous mycobacteria). Evidence is now beginning to emerge through systematic reviews of the outcomes of clinical studies employing CHM to treat infections. Of the 106 Cochrane systematic reviews on CHM, 16 (ca 15%) reviews examine CHM in the context of treating a specific infection disease or state. This update examines direct antimicrobial effect of CHM on bacterial pathogens, as well as synergistic effects of combining CHM with conventional antibiotics.
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Affiliation(s)
- B C Millar
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK.,School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, UK
| | - J R Rao
- Plant Pathology, AgriFood & Biosciences Institute (AFBI), Belfast, UK
| | - J E Moore
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK.,School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, UK
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14
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Schuster T, Flicker F, Li M, Kotochigova S, Moore JE, Ye J, Yao NY. Realizing Hopf Insulators in Dipolar Spin Systems. Phys Rev Lett 2021; 127:015301. [PMID: 34270282 DOI: 10.1103/physrevlett.127.015301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 09/24/2020] [Accepted: 04/19/2021] [Indexed: 06/13/2023]
Abstract
The Hopf insulator is a weak topological insulator characterized by an insulating bulk with conducting edge states protected by an integer-valued linking number invariant. The state exists in three-dimensional two-band models. We demonstrate that the Hopf insulator can be naturally realized in lattices of dipolar-interacting spins, where spin exchange plays the role of particle hopping. The long-ranged, anisotropic nature of the dipole-dipole interactions allows for the precise detail required in the momentum-space structure, while different spin orientations ensure the necessary structure of the complex phases of the hoppings. Our model features robust gapless edge states at both smooth edges, as well as sharp edges obeying a certain crystalline symmetry, despite the breakdown of the two-band picture at the latter. In an accompanying paper [T. Schuster et al., Phys. Rev. A 103, AW11986 (2021)PLRAAN2469-9926] we provide a specific experimental blueprint for implementing our proposal using ultracold polar molecules of ^{40}K^{87}Rb.
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Affiliation(s)
- Thomas Schuster
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Felix Flicker
- Department of Physics, University of California, Berkeley, California 94720, USA
- Rudolph Peierls Centre for Theoretical Physics, University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Ming Li
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA
| | | | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jun Ye
- JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - Norman Y Yao
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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15
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Abstract
Invasive fungal disease continues to be a cause of significant life-threatening morbidity and mortality in humans, particularly in those with a diminished immune system, such as with haematological malignancies. The mainstay of treating such life-threatening fungal infection has been antifungal drugs, including azoles, echinocandins and macrocyclic polyenes. However, like antibiotic resistance, antifungal resistance is beginning to emerge, potentially jeopardizing the effectiveness of these molecules in the treatment of fungal disease. One strategy to avoid this is the development of fungal vaccines. However, the inability to provoke a sufficient immune response in the most vulnerable immunocompromised groups has hindered translation from bench to bedside. This review will assess the latest available data and will investigate potential Aspergillus antigens and feasible vaccine techniques, particularly for vaccination of high-risk groups, including immunocompromised and immunosuppressed populations.
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Affiliation(s)
- H T Pattison
- School of Medicine, Dentistry and Biomedical Sciences, the Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, Northern Ireland, UK
| | - B C Millar
- School of Medicine, Dentistry and Biomedical Sciences, the Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, Northern Ireland, UK.,Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, Northern Ireland, UK
| | - J E Moore
- School of Medicine, Dentistry and Biomedical Sciences, the Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, Northern Ireland, UK.,Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, Northern Ireland, UK
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16
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Chirolli L, Moore JE. Enhanced Coherence in Superconducting Circuits via Band Engineering. Phys Rev Lett 2021; 126:187701. [PMID: 34018786 DOI: 10.1103/physrevlett.126.187701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
In superconducting circuits interrupted by Josephson junctions, the dependence of the energy spectrum on offset charges on different islands is 2e periodic through the Aharonov-Casher effect and resembles a crystal band structure that reflects the symmetries of the Josephson potential. We show that higher-harmonic Josephson elements described by a cos(2φ) energy-phase relation provide an increased freedom to tailor the shape of the Josephson potential and design spectra featuring multiplets of flat bands and Dirac points in the charge Brillouin zone. Flat bands provide noise-insensitive energy levels, and consequently, engineering band pairs with flat spectral gaps can help improve the coherence of the system. We discuss a modified version of a flux qubit that achieves, in principle, no decoherence from charge noise and introduce a flux qutrit that shows a spin-1 Dirac spectrum and is simultaneously quite robust to both charge and flux noise.
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Affiliation(s)
- Luca Chirolli
- Department of Physics, University of California, Berkeley, California 94720, USA
- Istituto Nanoscienze-CNR, I-56127 Pisa, Italy
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Sciences Division, Berkeley, California 94720, USA
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17
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Kozii V, Avdoshkin A, Zhong S, Moore JE. Intrinsic Anomalous Hall Conductivity in a Nonuniform Electric Field. Phys Rev Lett 2021; 126:156602. [PMID: 33929246 DOI: 10.1103/physrevlett.126.156602] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
We study how the intrinsic anomalous Hall conductivity is modified in two-dimensional crystals with broken time-reversal symmetry due to weak inhomogeneity of the applied electric field. Focusing on a clean noninteracting two-band system without band crossings, we derive the general expression for the Hall conductivity at small finite wave vector q to order q^{2}, which governs the Hall response to the second gradient of the electric field. Using the Kubo formula, we show that the answer can be expressed through the Berry curvature, Fubini-Study quantum metric, and the rank-3 symmetric tensor which is related to the quantum geometric connection and physically corresponds to the gauge-invariant part of the third cumulant of the position operator. We further compare our results with the predictions made within the semiclassical approach. By deriving the semiclassical equations of motion, we reproduce the result obtained from the Kubo formula in some limits. We also find, however, that the conventional semiclassical description in terms of the definite position and momentum of the electron is not fully consistent because of singular terms originating from the Heisenberg uncertainty principle. We thus present a clear example of a case when the semiclassical approach inherently suffers from the uncertainty principle, implying that it should be applied to systems in nonuniform fields with extra care.
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Affiliation(s)
- Vladyslav Kozii
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Alexander Avdoshkin
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Shudan Zhong
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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18
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Sbierski B, Dresselhaus EJ, Moore JE, Gruzberg IA. Criticality of Two-Dimensional Disordered Dirac Fermions in the Unitary Class and Universality of the Integer Quantum Hall Transition. Phys Rev Lett 2021; 126:076801. [PMID: 33666465 DOI: 10.1103/physrevlett.126.076801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Two-dimensional (2D) Dirac fermions are a central paradigm of modern condensed matter physics, describing low-energy excitations in graphene, in certain classes of superconductors, and on surfaces of 3D topological insulators. At zero energy E=0, Dirac fermions with mass m are band insulators, with the Chern number jumping by unity at m=0. This observation lead Ludwig et al. [Phys. Rev. B 50, 7526 (1994)PRBMDO0163-182910.1103/PhysRevB.50.7526] to conjecture that the transition in 2D disordered Dirac fermions (DDF) and the integer quantum Hall transition (IQHT) are controlled by the same fixed point and possess the same universal critical properties. Given the far-reaching implications for the emerging field of the quantum anomalous Hall effect, modern condensed matter physics, and our general understanding of disordered critical points, it is surprising that this conjecture has never been tested numerically. Here, we report the results of extensive numerics on the phase diagram and criticality of 2D DDF in the unitary class. We find a critical line at m=0, with an energy-dependent localization length exponent. At large energies, our results for the DDF are consistent with state-of-the-art numerical results ν_{IQH}=2.56-2.62 from models of the IQHT. At E=0, however, we obtain ν_{0}=2.30-2.36 incompatible with ν_{IQH}. This result challenges conjectured relations between different models of the IQHT, and several interpretations are discussed.
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Affiliation(s)
- Björn Sbierski
- Department of Physics, University of California, Berkeley, California 94720, USA
| | | | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Ilya A Gruzberg
- Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, Ohio 43210, USA
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19
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Kobrin B, Yang Z, Kahanamoku-Meyer GD, Olund CT, Moore JE, Stanford D, Yao NY. Many-Body Chaos in the Sachdev-Ye-Kitaev Model. Phys Rev Lett 2021; 126:030602. [PMID: 33543957 DOI: 10.1103/physrevlett.126.030602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/06/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Many-body chaos has emerged as a powerful framework for understanding thermalization in strongly interacting quantum systems. While recent analytic advances have sharpened our intuition for many-body chaos in certain large N theories, it has proven challenging to develop precise numerical tools capable of exploring this phenomenon in generic Hamiltonians. To this end, we utilize massively parallel, matrix-free Krylov subspace methods to calculate dynamical correlators in the Sachdev-Ye-Kitaev model for up to N=60 Majorana fermions. We begin by showing that numerical results for two-point correlation functions agree at high temperatures with dynamical mean field solutions, while at low temperatures finite-size corrections are quantitatively reproduced by the exactly solvable dynamics of near extremal black holes. Motivated by these results, we develop a novel finite-size rescaling procedure for analyzing the growth of out-of-time-order correlators. Our procedure accurately determines the Lyapunov exponent, λ, across a wide range in temperatures, including in the regime where λ approaches the universal bound, λ=2π/β.
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Affiliation(s)
- Bryce Kobrin
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Zhenbin Yang
- Department of Physics, Princeton University, Princeton, New Jersey 08540, USA
- Stanford Institute for Theoretical Physics, Stanford, California 94305, USA
| | | | - Christopher T Olund
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Douglas Stanford
- Stanford Institute for Theoretical Physics, Stanford, California 94305, USA
- Institute for Advanced Study, Princeton, New Jersey 08540, USA
| | - Norman Y Yao
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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20
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Moore JE, Millar BC. Meningococcal vaccination of laboratory workers. J Hosp Infect 2020; 108:217-218. [PMID: 33232778 DOI: 10.1016/j.jhin.2020.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 11/19/2022]
Affiliation(s)
- J E Moore
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, Northern Ireland, UK.
| | - B C Millar
- Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, Northern Ireland, UK
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21
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McIlroy R, Millar BC, Nelson DW, Murphy A, Rao JR, Downey DG, Moore JE. Pseudomonas aeruginosa - Candida interplay: effect on in vitro antibiotic susceptibility of Pseudomonas aeruginosa when grown in the presence of Candida culture. Br J Biomed Sci 2020; 78:95-97. [PMID: 32887537 DOI: 10.1080/09674845.2020.1819003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- R McIlroy
- Wellcome-Wolfson Institute For Experimental Medicine, Queen's University , Belfast, UK.,Northern Ireland Public Health Laboratory , Department of Bacteriology, Belfast, UK.,Plant Pathology, AgriFood & Biosciences Institute , Belfast, UK
| | - B C Millar
- Wellcome-Wolfson Institute For Experimental Medicine, Queen's University , Belfast, UK.,Northern Ireland Public Health Laboratory , Department of Bacteriology, Belfast, UK
| | - D W Nelson
- Plant Pathology, AgriFood & Biosciences Institute , Belfast, UK
| | - A Murphy
- Northern Ireland Public Health Laboratory , Department of Bacteriology, Belfast, UK
| | - J R Rao
- Plant Pathology, AgriFood & Biosciences Institute , Belfast, UK
| | - D G Downey
- Wellcome-Wolfson Institute For Experimental Medicine, Queen's University , Belfast, UK.,Northern Ireland Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital , Belfast, UK
| | - J E Moore
- Wellcome-Wolfson Institute For Experimental Medicine, Queen's University , Belfast, UK.,Northern Ireland Public Health Laboratory , Department of Bacteriology, Belfast, UK
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22
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Moore JE, Millar BC. Successful disinfection of trumpet mouthpieces using domestic steam disinfection. Lett Appl Microbiol 2020; 71:506-509. [PMID: 32745274 DOI: 10.1111/lam.13367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/27/2022]
Abstract
There have been numerous reports in the literature describing the diversity of microbial flora isolated from woodwind and brass instruments, with potential infection risks for players, especially when such instruments are shared. Steam disinfection has become established as a trusted method of decontamination; however, there have been no reports on the employment of this technology to disinfect parts of musical instruments, hence it was the aim of this study to examine the fate of bacterial and yeast pathogens on artificially contaminated trumpet mouthpieces and to evaluate whether such disinfection is an effective method of disinfection for such instrument parts. Trumpet mouthpieces were artificially contaminated with 18 microbial strains (17 bacteria from four genera (Enterococcus, Escherichia, Staphylococcus and Streptococcus) and one yeast (Candida)), each at an inoculum density of approximately 1·5 × 107 colony forming units and subjected to a disinfection cycle. The experiment was repeated including 50% (v/v) sterile sputum as soil. No bacteria or yeast organisms were recovered post disinfection, including following recovery and with nonselective cultural enrichment techniques.
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Affiliation(s)
- J E Moore
- Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK.,School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, UK
| | - B C Millar
- Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK.,School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, UK
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23
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Abstract
Metals in one spatial dimension are described at the lowest energy scales by the Luttinger liquid theory. It is well understood that this free theory, and even interacting integrable models, can support ballistic transport of conserved quantities including energy. In contrast, realistic one-dimensional metals, even without disorder, contain integrability-breaking interactions that are expected to lead to thermalization and conventional diffusive linear response. We argue that the expansion of energy when such a nonintegrable Luttinger liquid is locally heated above its ground state shows superdiffusive behavior (i.e., spreading of energy that is intermediate between diffusion and ballistic propagation), by combining an analytical anomalous diffusion model with numerical matrix-product-state calculations on a specific perturbed spinless fermion chain. Different metals will have different scaling exponents and shapes in their energy spreading, but the superdiffusive behavior is stable and should be visible in time-resolved experiments.
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Affiliation(s)
- Vir B Bulchandani
- Department of Physics, University of California, Berkeley, CA 94720;
| | - Christoph Karrasch
- Institut für Mathematische Physik, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, CA 94720
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
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24
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Aprà E, Bylaska EJ, de Jong WA, Govind N, Kowalski K, Straatsma TP, Valiev M, van Dam HJJ, Alexeev Y, Anchell J, Anisimov V, Aquino FW, Atta-Fynn R, Autschbach J, Bauman NP, Becca JC, Bernholdt DE, Bhaskaran-Nair K, Bogatko S, Borowski P, Boschen J, Brabec J, Bruner A, Cauët E, Chen Y, Chuev GN, Cramer CJ, Daily J, Deegan MJO, Dunning TH, Dupuis M, Dyall KG, Fann GI, Fischer SA, Fonari A, Früchtl H, Gagliardi L, Garza J, Gawande N, Ghosh S, Glaesemann K, Götz AW, Hammond J, Helms V, Hermes ED, Hirao K, Hirata S, Jacquelin M, Jensen L, Johnson BG, Jónsson H, Kendall RA, Klemm M, Kobayashi R, Konkov V, Krishnamoorthy S, Krishnan M, Lin Z, Lins RD, Littlefield RJ, Logsdail AJ, Lopata K, Ma W, Marenich AV, Martin Del Campo J, Mejia-Rodriguez D, Moore JE, Mullin JM, Nakajima T, Nascimento DR, Nichols JA, Nichols PJ, Nieplocha J, Otero-de-la-Roza A, Palmer B, Panyala A, Pirojsirikul T, Peng B, Peverati R, Pittner J, Pollack L, Richard RM, Sadayappan P, Schatz GC, Shelton WA, Silverstein DW, Smith DMA, Soares TA, Song D, Swart M, Taylor HL, Thomas GS, Tipparaju V, Truhlar DG, Tsemekhman K, Van Voorhis T, Vázquez-Mayagoitia Á, Verma P, Villa O, Vishnu A, Vogiatzis KD, Wang D, Weare JH, Williamson MJ, Windus TL, Woliński K, Wong AT, Wu Q, Yang C, Yu Q, Zacharias M, Zhang Z, Zhao Y, Harrison RJ. NWChem: Past, present, and future. J Chem Phys 2020; 152:184102. [PMID: 32414274 DOI: 10.1063/5.0004997] [Citation(s) in RCA: 275] [Impact Index Per Article: 68.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Specialized computational chemistry packages have permanently reshaped the landscape of chemical and materials science by providing tools to support and guide experimental efforts and for the prediction of atomistic and electronic properties. In this regard, electronic structure packages have played a special role by using first-principle-driven methodologies to model complex chemical and materials processes. Over the past few decades, the rapid development of computing technologies and the tremendous increase in computational power have offered a unique chance to study complex transformations using sophisticated and predictive many-body techniques that describe correlated behavior of electrons in molecular and condensed phase systems at different levels of theory. In enabling these simulations, novel parallel algorithms have been able to take advantage of computational resources to address the polynomial scaling of electronic structure methods. In this paper, we briefly review the NWChem computational chemistry suite, including its history, design principles, parallel tools, current capabilities, outreach, and outlook.
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Affiliation(s)
- E Aprà
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - E J Bylaska
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - W A de Jong
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - N Govind
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - K Kowalski
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - T P Straatsma
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M Valiev
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - H J J van Dam
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y Alexeev
- Argonne Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J Anchell
- Intel Corporation, Santa Clara, California 95054, USA
| | - V Anisimov
- Argonne Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - F W Aquino
- QSimulate, Cambridge, Massachusetts 02139, USA
| | - R Atta-Fynn
- Department of Physics, The University of Texas at Arlington, Arlington, Texas 76019, USA
| | - J Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, USA
| | - N P Bauman
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - J C Becca
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - D E Bernholdt
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | | | - S Bogatko
- 4G Clinical, Wellesley, Massachusetts 02481, USA
| | - P Borowski
- Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, Poland
| | - J Boschen
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - J Brabec
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague 8, Czech Republic
| | - A Bruner
- Department of Chemistry and Physics, University of Tennessee at Martin, Martin, Tennessee 38238, USA
| | - E Cauët
- Service de Chimie Quantique et Photophysique (CP 160/09), Université libre de Bruxelles, B-1050 Brussels, Belgium
| | - Y Chen
- Facebook, Menlo Park, California 94025, USA
| | - G N Chuev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Science, Pushchino, Moscow Region 142290, Russia
| | - C J Cramer
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J Daily
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - M J O Deegan
- SKAO, Jodrell Bank Observatory, Macclesfield SK11 9DL, United Kingdom
| | - T H Dunning
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - M Dupuis
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, USA
| | - K G Dyall
- Dirac Solutions, Portland, Oregon 97229, USA
| | - G I Fann
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S A Fischer
- Chemistry Division, U. S. Naval Research Laboratory, Washington, DC 20375, USA
| | - A Fonari
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - H Früchtl
- EaStCHEM and School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, United Kingdom
| | - L Gagliardi
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J Garza
- Departamento de Química, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Iztapalapa, Col. Vicentina, Iztapalapa, C.P. 09340 Ciudad de México, Mexico
| | - N Gawande
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - S Ghosh
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 5545, USA
| | - K Glaesemann
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - A W Götz
- San Diego Supercomputer Center, University of California, San Diego, La Jolla, California 92093, USA
| | - J Hammond
- Intel Corporation, Santa Clara, California 95054, USA
| | - V Helms
- Center for Bioinformatics, Saarland University, D-66041 Saarbrücken, Germany
| | - E D Hermes
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, USA
| | - K Hirao
- Next-generation Molecular Theory Unit, Advanced Science Institute, RIKEN, Saitama 351-0198, Japan
| | - S Hirata
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - M Jacquelin
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - L Jensen
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - B G Johnson
- Acrobatiq, Pittsburgh, Pennsylvania 15206, USA
| | - H Jónsson
- Faculty of Physical Sciences, University of Iceland, Reykjavík, Iceland and Department of Applied Physics, Aalto University, FI-00076 Aalto, Espoo, Finland
| | - R A Kendall
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - M Klemm
- Intel Corporation, Santa Clara, California 95054, USA
| | - R Kobayashi
- ANU Supercomputer Facility, Australian National University, Canberra, Australia
| | - V Konkov
- Chemistry Program, Florida Institute of Technology, Melbourne, Florida 32901, USA
| | - S Krishnamoorthy
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - M Krishnan
- Facebook, Menlo Park, California 94025, USA
| | - Z Lin
- Department of Physics, University of Science and Technology of China, Hefei, China
| | - R D Lins
- Aggeu Magalhaes Institute, Oswaldo Cruz Foundation, Recife, Brazil
| | | | - A J Logsdail
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, Wales CF10 3AT, United Kingdom
| | - K Lopata
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - W Ma
- Institute of Software, Chinese Academy of Sciences, Beijing, China
| | - A V Marenich
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J Martin Del Campo
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, México City, Mexico
| | - D Mejia-Rodriguez
- Quantum Theory Project, Department of Physics, University of Florida, Gainesville, Florida 32611, USA
| | - J E Moore
- Intel Corporation, Santa Clara, California 95054, USA
| | - J M Mullin
- DCI-Solutions, Aberdeen Proving Ground, Maryland 21005, USA
| | - T Nakajima
- Computational Molecular Science Research Team, RIKEN Center for Computational Science, Kobe, Hyogo 650-0047, Japan
| | - D R Nascimento
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - J A Nichols
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - P J Nichols
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J Nieplocha
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - A Otero-de-la-Roza
- Departamento de Química Física y Analítica, Facultad de Química, Universidad de Oviedo, 33006 Oviedo, Spain
| | - B Palmer
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - A Panyala
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - T Pirojsirikul
- Department of Chemistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - B Peng
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - R Peverati
- Chemistry Program, Florida Institute of Technology, Melbourne, Florida 32901, USA
| | - J Pittner
- J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., 18223 Prague 8, Czech Republic
| | - L Pollack
- StudyPoint, Boston, Massachusetts 02114, USA
| | | | - P Sadayappan
- School of Computing, University of Utah, Salt Lake City, Utah 84112, USA
| | - G C Schatz
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
| | - W A Shelton
- Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | | | - D M A Smith
- Intel Corporation, Santa Clara, California 95054, USA
| | - T A Soares
- Dept. of Fundamental Chemistry, Universidade Federal de Pernambuco, Recife, Brazil
| | - D Song
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - M Swart
- ICREA, 08010 Barcelona, Spain and Universitat Girona, Institut de Química Computacional i Catàlisi, Campus Montilivi, 17003 Girona, Spain
| | - H L Taylor
- CD-adapco/Siemens, Melville, New York 11747, USA
| | - G S Thomas
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - V Tipparaju
- Cray Inc., Bloomington, Minnesota 55425, USA
| | - D G Truhlar
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | | | - T Van Voorhis
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Á Vázquez-Mayagoitia
- Argonne Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - P Verma
- 1QBit, Vancouver, British Columbia V6E 4B1, Canada
| | - O Villa
- NVIDIA, Santa Clara, California 95051, USA
| | - A Vishnu
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - K D Vogiatzis
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - D Wang
- College of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, China
| | - J H Weare
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California 92093, USA
| | - M J Williamson
- Department of Chemistry, Cambridge University, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - T L Windus
- Department of Chemistry, Iowa State University and Ames Laboratory, Ames, Iowa 50011, USA
| | - K Woliński
- Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, Poland
| | - A T Wong
- Qwil, San Francisco, California 94107, USA
| | - Q Wu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Yang
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Q Yu
- AMD, Santa Clara, California 95054, USA
| | - M Zacharias
- Department of Physics, Technical University of Munich, 85748 Garching, Germany
| | - Z Zhang
- Stanford Research Computing Center, Stanford University, Stanford, California 94305, USA
| | - Y Zhao
- State Key Laboratory of Silicate Materials for Architectures, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - R J Harrison
- Institute for Advanced Computational Science, Stony Brook University, Stony Brook, New York 11794, USA
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25
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Avdoshkin A, Kozii V, Moore JE. Interactions Remove the Quantization of the Chiral Photocurrent at Weyl Points. Phys Rev Lett 2020; 124:196603. [PMID: 32469533 DOI: 10.1103/physrevlett.124.196603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
The chiral photocurrent or circular photogalvanic effect (CPGE) is a photocurrent that depends on the sense of circular polarization. In a disorder-free, noninteracting chiral Weyl semimetal, the magnitude of the effect is approximately quantized with a material-independent quantum e^{3}/h^{2} for reasons of band topology. We study the first-order corrections due to the Coulomb and Hubbatrd interactions in a continuum model of a Weyl semimetal in which known corrections from other bands are absent. We find that the inclusion of interactions generically breaks the quantization. The corrections are similar but larger in magnitude than previously studied interaction corrections to the (nontopological) linear optical conductivity of graphene, and have a potentially observable frequency dependence. We conclude that, unlike the quantum Hall effect in gapped phases or the chiral anomaly in field theories, the quantization of the CPGE in Weyl semimetals is not protected but has perturbative corrections in interaction strength.
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Affiliation(s)
- Alexander Avdoshkin
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Vladyslav Kozii
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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26
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Moore JE, Millar BC. The day the agar stopped working: what emerging antimicrobial resistance (AMR) means for microbiology laboratory testing-potential effects on infectious disease reporting. Clin Microbiol Infect 2020; 26:973-975. [PMID: 32360776 DOI: 10.1016/j.cmi.2020.04.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 11/28/2022]
Affiliation(s)
- J E Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK; School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK; School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast Northern Ireland, UK.
| | - B C Millar
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK; School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK; School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast Northern Ireland, UK
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Schuster T, Gazit S, Moore JE, Yao NY. Floquet Hopf Insulators. Phys Rev Lett 2019; 123:266803. [PMID: 31951462 DOI: 10.1103/physrevlett.123.266803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/23/2019] [Indexed: 06/10/2023]
Abstract
We predict the existence of a Floquet topological insulator in three-dimensional two-band systems, the Floquet Hopf insulator, which possesses two distinct topological invariants. One is the Hopf Z invariant, a linking number characterizing the (nondriven) Hopf topological insulator. The second invariant is an intrinsically Floquet Z_{2} invariant, and represents a condensed matter realization of the topology underlying the Witten anomaly in particle physics. Both invariants arise from topological defects in the system's time evolution, subject to a process in which defects at different quasienergies exchange even amounts of topological charge. Their contrasting classifications lead to a measurable physical consequence, namely, an unusual bulk-boundary correspondence where gapless edge modes are topologically protected, but may exist at either 0 or π quasienergy. Our results represent a phase of matter beyond the conventional classification of Floquet topological insulators.
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Affiliation(s)
- Thomas Schuster
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Snir Gazit
- Department of Physics, University of California, Berkeley, California 94720, USA
- Racah Institute of Physics and the Fritz Haber Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Norman Y Yao
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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28
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Berdanier W, Scaffidi T, Moore JE. Energy Drag in Particle-Hole Symmetric Systems as a Quantum Quench. Phys Rev Lett 2019; 123:246603. [PMID: 31922879 DOI: 10.1103/physrevlett.123.246603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Two conducting quantum systems coupled only via interactions can exhibit the phenomenon of Coulomb drag, in which a current passed through one layer can pull a current along in the other. However, in systems with particle-hole symmetry-for instance, the half filled Hubbard model or graphene near the Dirac point-the Coulomb drag effect vanishes to leading order in the interaction. Its thermal analog, whereby a thermal current in one layer pulls a thermal current in the other, does not vanish and is indeed the dominant form of drag in particle-hole symmetric systems. By studying a quantum quench, we show that thermal drag, unlike charge drag, displays a non-Fermi's golden rule growth at short times due to a logarithmic scattering singularity generic to one dimension. Exploiting the integrability of the Hubbard model, we obtain the long-time limit of the quench for weak interactions. Finally, we comment on thermal drag effects in higher dimensional systems.
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Affiliation(s)
- William Berdanier
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Thomas Scaffidi
- Department of Physics, University of California, Berkeley, California 94720, USA
- Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7, Canada
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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29
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Jafarnejad M, Ismail AZ, Duarte D, Vyas C, Ghahramani A, Zawieja DC, Lo Celso C, Poologasundarampillai G, Moore JE. Quantification of the Whole Lymph Node Vasculature Based on Tomography of the Vessel Corrosion Casts. Sci Rep 2019; 9:13380. [PMID: 31527597 PMCID: PMC6746739 DOI: 10.1038/s41598-019-49055-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 08/05/2019] [Indexed: 12/12/2022] Open
Abstract
Lymph nodes (LN) are crucial for immune function, and comprise an important interface between the blood and lymphatic systems. Blood vessels (BV) in LN are highly specialized, featuring high endothelial venules across which most of the resident lymphocytes crossed. Previous measurements of overall lymph and BV flow rates demonstrated that fluid also crosses BV walls, and that this is important for immune function. However, the spatial distribution of the BV in LN has not been quantified to the degree necessary to analyse the distribution of transmural fluid movement. In this study, we seek to quantify the spatial localization of LNBV, and to predict fluid movement across BV walls. MicroCT imaging of murine popliteal LN showed that capillaries were responsible for approximately 75% of the BV wall surface area, and that this was mostly distributed around the periphery of the node. We then modelled blood flow through the BV to obtain spatially resolved hydrostatic pressures, which were then combined with Starling’s law to predict transmural flow. Much of the total 10 nL/min transmural flow (under normal conditions) was concentrated in the periphery, corresponding closely with surface area distribution. These results provide important insights into the inner workings of LN, and provide a basis for further exploration of the role of LN flow patterns in normal and pathological functions.
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Affiliation(s)
- M Jafarnejad
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - A Z Ismail
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - D Duarte
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
| | - C Vyas
- The School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, M13 9PL, UK
| | - A Ghahramani
- The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - D C Zawieja
- Department of Medical Physiology, Texas A&M Health Science Center, Temple, Texas, 76504, USA
| | - C Lo Celso
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK.,The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | | | - J E Moore
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK.
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30
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Boyle M, Moore JE, Whitehouse JL, Bilton D, Downey DG. The diagnosis and management of respiratory tract fungal infection in cystic fibrosis: A UK survey of current practice. Med Mycol 2019; 57:155-160. [PMID: 29554296 DOI: 10.1093/mmy/myy014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/19/2018] [Indexed: 12/30/2022] Open
Abstract
Aspergillus fumigatus is commonly found in the airways of patients with cystic fibrosis (CF), and allergic bronchopulmonary aspergillosis (ABPA) is the most recognized associated clinical condition. However, accurate diagnosis remains challenging, and there is a paucity of clinical trials to guide clinical management of fungal disease. The aim of this survey was to assess the variability in current practice across the UK in diagnosis and management of fungal lung disease in CF patients. A 21 question anonymous online survey was sent to 94 paediatric and adult CF consultants in the UK. The response rate was 60.6% (32 adult physicians, 25 pediatricians) with 55 full and 2 partially completed surveys. For a first diagnosis of ABPA 20 (35.1%) treat with prednisolone alone, 38 (66.7%) use prednisolone with itraconazole and 2 (3.5%) choose voriconazole. Only 5 (8.8%) treat with prednisolone alone for a 1st relapse, 33 (58%) used prednisolone with itraconazole. To reduce treatment, 21 (36.8%) decrease steroids to zero over time and maintain azole therapy, 18 (31.6%) stop the azole and steroid after a fixed time, and 5 (8.8%) stop the azole after a fixed time and maintain a small steroid dose. Thirty-eight (66.7%) respondents believe Aspergillus colonization of the airway can cause clinical deterioration, and 37 (66.1%) would treat this. Scedosporium apiospermum infection has been diagnosed and treated by 35 (61.4%) of respondents. Results of this survey highlight the variance in clinical practice and the limited evidence available to guide management of fungal infection in CF.
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Affiliation(s)
- M Boyle
- Northern Ireland Regional Adult CF Centre, Belfast City Hospital, Belfast, Northern Ireland, UK
| | - J E Moore
- Northern Ireland Regional Adult CF Centre, Belfast City Hospital, Belfast, Northern Ireland, UK
| | | | - D Bilton
- Royal Brompton Hospital, London, UK
| | - D G Downey
- Northern Ireland Regional Adult CF Centre, Belfast City Hospital, Belfast, Northern Ireland, UK.,Centre for Experimental Medicine, Queen's University of Belfast, Belfast, Northern Ireland, UK
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Nelson D, Moore JE, Millar BC, Rao JR. ANTIMICROBIAL PROPERTIES OF NATIVE ULSTER MACROFUNGI (MUSHROOMS AND TOADSTOOLS) TO CLINICAL PATHOGENS. Ulster Med J 2019; 88:130-132. [PMID: 31105354 PMCID: PMC6500400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D Nelson
- Plant Pathology Research Division, AgriFood & Biosciences Institute (AFBI), Newforge Lane, Belfast, BT9 5PX, Northern Ireland, UK.,,Correspondence to: Dr. David Nelson E-mail:
| | - JE Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD, Northern Ireland, UK
| | - BC Millar
- Northern Ireland Public Health Laboratory, Department of Bacteriology Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD, Northern Ireland, UK
| | - JR Rao
- Plant Pathology Research Division, AgriFood & Biosciences Institute (AFBI), Newforge Lane, Belfast, BT9 5PX, Northern Ireland, UK
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32
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Bashir NY, Moore JE, Buckland D, Rodrigues M, Tonelli M, Thombs BD, Bell NR, Isaranuwatchai W, Peng T, Shilman DM, Straus SE. Are patient education materials about cancer screening more effective when co-created with patients? A qualitative interview study and randomized controlled trial. ACTA ACUST UNITED AC 2019; 26:124-136. [PMID: 31043815 DOI: 10.3747/co.26.4621] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Patient education materials (pems) are frequently used to help patients make cancer screening decisions. However, because pems are typically developed by experts, they might inadequately address patient barriers to screening. We co-created, with patients, a prostate cancer (pca) screening pem, and we compared how the co-created pem and a pem developed by experts affected decisional conflict and screening intention in patients. Methods We identified and used patient barriers to pca screening to co-create a pca screening pem with patients, clinicians, and researchers. We then conducted a parallel-group randomized controlled trial with men 40 years of age and older in Ontario to compare decisional conflict and intention about pca screening after those men had viewed the co-created pem (intervention) or an expert-created pem (control). Participants were randomized using dynamic block randomization, and the study team was blinded to the allocation. Results Of 287 participants randomized to exposure to the co-created pem, 230 were analyzed, and of 287 randomized to exposure to the expert-created pem, 223 were analyzed. After pem exposure, intervention and control participants did not differ significantly in Decisional Conflict Scale scores [mean difference: 0.37 ± 1.23; 95% confidence interval (ci): -2.05 to 2.79]; in sure (Sure of myself, Understand information, Risk-benefit ratio, or Encouragement) scores (odds ratio: 0.75; 95% ci: 0.52 to 1.08); or in screening intention (mean difference: 0.09 ± 0.08; 95% ci: -0.06 to 0.24]). Conclusions The effectiveness of the co-created pem did not differ from that of the pem developed by experts. Thus, pem developers should choose the method that best fits their goals and resources.
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Affiliation(s)
- N Y Bashir
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - J E Moore
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - D Buckland
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - M Rodrigues
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - M Tonelli
- Cumming School of Medicine, University of Calgary, Calgary, AB
| | - B D Thombs
- Lady Davis Institute, Sir Mortimer B. Davis Jewish General Hospital, and McGill University, Montreal, QC
| | - N R Bell
- Department of Family Medicine, University of Alberta, Edmonton, AB
| | - W Isaranuwatchai
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - T Peng
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - D M Shilman
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON
| | - S E Straus
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON.,Department of Medicine, University of Toronto, Toronto, ON
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33
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Affiliation(s)
- Joel E Moore
- Department of Physics, University of California, Berkeley, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, USA
- E-mail:
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34
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Hayes IM, Hao Z, Maksimovic N, Lewin SK, Chan MK, McDonald RD, Ramshaw BJ, Moore JE, Analytis JG. Magnetoresistance Scaling Reveals Symmetries of the Strongly Correlated Dynamics in BaFe_{2}(As_{1-x}P_{x})_{2}. Phys Rev Lett 2018; 121:197002. [PMID: 30468585 DOI: 10.1103/physrevlett.121.197002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/23/2018] [Indexed: 06/09/2023]
Abstract
The phenomenon of T-linear resistivity commonly observed in a number of strange metals has been widely seen as evidence for the breakdown of the quasiparticle picture of metals. This study shows that a recently discovered H/T scaling relationship in the magnetoresistance of the strange metal BaFe_{2}(As_{1-x}P_{x})_{2} is independent of the relative orientations of current and magnetic field. Rather, its magnitude and form depend only on the orientation of the magnetic field with respect to a single crystallographic axis: the direction perpendicular to the magnetic iron layers. This finding suggests that the magnetotransport scaling does not originate from the conventional averaging or orbital velocity of quasiparticles as they traverse a Fermi surface, but rather from dissipation arising from two-dimensional correlations.
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Affiliation(s)
- Ian M Hayes
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Science Division, Berkeley, California 94720, USA
| | - Zeyu Hao
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Nikola Maksimovic
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Science Division, Berkeley, California 94720, USA
| | - Sylvia K Lewin
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Science Division, Berkeley, California 94720, USA
| | - Mun K Chan
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Ross D McDonald
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - B J Ramshaw
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Science Division, Berkeley, California 94720, USA
| | - James G Analytis
- Department of Physics, University of California, Berkeley, California 94720, USA
- Lawrence Berkeley National Laboratory, Materials Science Division, Berkeley, California 94720, USA
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35
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Bell J, Moore JE, Millar BC. Cleaning of inpatient nebulizer devices in cystic fibrosis patients: the urgent need for universal guidelines. J Hosp Infect 2018; 100:e64-e66. [PMID: 30369424 DOI: 10.1016/j.jhin.2018.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/15/2022]
Affiliation(s)
- J Bell
- Northern Ireland Paediatric CF Centre, Royal Belfast Hospital for Sick Children, Royal Group of Hospitals, Belfast, UK.
| | - J E Moore
- Northern Ireland Regional Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital, Lisburn Road, Belfast, UK; Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, UK
| | - B C Millar
- Northern Ireland Regional Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital, Lisburn Road, Belfast, UK; Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, UK
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Millar BC, Rendall JC, Downey DG, Moore JE. Does ivacaftor interfere with the antimicrobial activity of commonly used antibiotics against Pseudomonas aeruginosa?-Results of an in vitro study. J Clin Pharm Ther 2018; 43:836-843. [PMID: 29959786 DOI: 10.1111/jcpt.12722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 05/15/2018] [Indexed: 12/27/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Ivacaftor is a novel potentiator of defective cystic fibrosis transmembrane conductance regulator (CFTR) protein, which corrects the gating defect and increases ion-function of activated cell-surface CFTR. Bacteria also regulate their physiology through ion channels. However, little is known about the potential effects of ivacaftor on bacterial ion channels, which, in turn, may have a potential effect on transport across the bacterial cell membrane. Therefore, any change in the ability to transport molecules across cell membranes in bacteria could have an important impact on bacterial transport physiology. One area where this could be particularly important is in the movement of antibiotics, both into and out of the bacterial cell. An in vitro study was therefore performed to examine the influence of ivacaftor at therapeutic concentration on antibiotic susceptibility of 11 commonly used anti-pseudomonal antibiotics against a population of clinical Pseudomonas aeruginosa [PA], from CF and non-CF sources. METHOD Pseudomonas aeruginosa (n = 80; including 70 ivacaftor-naïve clinical PA from sputa from adult CF patients and 10 control PA from non-CF clinical blood culture sources) were examined. Antibiotic susceptibility was determined by standard disc diffusion assay using CLSI criteria and measuring zone size (mm), against four classes of anti-pseudomonal antibiotics, including beta-lactams (temocillin, ceftazidime, piperacillin/tazobactam, imipenem, meropenem and aztreonam), aminoglycosides (gentamicin, tobramycin, amikacin), fluoroquinolone (ciprofloxacin) and polymyxin (colistin), in the absence and presence of ivacaftor (5 μmol/L), as previously determined. In addition, all CF and non-CF PA were examined phenotypically in vitro, as previously described, for changes linked to bacterial virulence, including (i) growth density (ii) pigmentation, (iii) presence of adhesins and (iv) change to mucoidy, in the presence/absence of ivacaftor at therapeutic concentration. RESULTS AND DISCUSSION Antibiotic susceptibility did not decrease significantly with any of the antibiotics examined with CF PA isolates or with non-CF PA control organisms. There was a statistically significant increase in zone size (CF PA and amikacin, gentamicin, temocillin and ciprofloxacin; Non-CF PA and amikacin, gentamicin and aztreonam). However, at a population level, this did not translate into a shift in CLSI category to a more susceptible phenotype. None of the PA isolates examined were susceptible to ivacaftor alone, and additionally, no changes were noted with the four phenotypic parameters examined in the presence of ivacaftor. WHAT IS NEW AND CONCLUSION This study showed that antibiotic susceptibility of commonly used anti-pseudomonal antibiotics was not negatively affected by ivacaftor, in a population of ivacaftor-naive P. aeruginosa.
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Affiliation(s)
- B C Millar
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - J C Rendall
- Northern Ireland Regional Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital, Belfast, UK
| | - D G Downey
- Northern Ireland Regional Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital, Belfast, UK.,Centre for Experimental Medicine, Queen's University, Belfast, UK
| | - J E Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,School of Biomedical Sciences, Ulster University, Coleraine, UK.,Northern Ireland Regional Adult Cystic Fibrosis Centre, Level 8, Belfast City Hospital, Belfast, UK.,Centre for Experimental Medicine, Queen's University, Belfast, UK
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Millar BC, Banks L, Bourke TW, Cunningham M, Dooley JSG, Elshibly S, Goldsmith CE, Fairley D, Jackson K, Lamont S, Jessop L, McCrudden E, McConnell D, McAuley K, McKenna JP, Moore PJA, Smithson R, Stirling J, Shields M, Moore JE. Meningococcal Disease Section 4: Post Disease Complications, Charity Support and Future Perspectives: MeningoNI Forum. THE ULSTER MEDICAL JOURNAL 2018; 87:99-101. [PMID: 29867263 PMCID: PMC5974664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 11/30/2022]
Affiliation(s)
- BC Millar
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - L Banks
- Meningitis Now, Stroud, Gloucestershire GL5 3TJ
| | - TW Bourke
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - M Cunningham
- University Health Centre at Queen’s, 7 University Terrace, Belfast, BT7 1NP
| | - JSG Dooley
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - S Elshibly
- Department of Microbiology, Antrim Area Hospital, Antrim, BT41 2RL
| | - CE Goldsmith
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - D Fairley
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - K Jackson
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - S Lamont
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - L Jessop
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - E McCrudden
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - D McConnell
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - K McAuley
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - JP McKenna
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - PJA Moore
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - R Smithson
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - J Stirling
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - M Shields
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - JE Moore
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN,Correspondence to Professor John E. Moore, Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD. E-mail:
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38
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Millar BC, Banks L, Bourke TW, Cunningham M, Dooley JSG, Elshibly S, Goldsmith CE, Fairley D, Jackson K, Lamont S, Jessop L, McCrudden E, McConnell D, McAuley K, McKenna JP, Moore PJA, Smithson R, Stirling J, Shields M, Moore JE. Meningococcal Disease Section 3: Diagnosis and Management: MeningoNI Forum. Ulster Med J 2018; 87:94-98. [PMID: 29867262 PMCID: PMC5974663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 10/29/2022]
Affiliation(s)
- BC Millar
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - L Banks
- Meningitis Now, Stroud, Gloucestershire GL5 3TJ
| | - TW Bourke
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - M Cunningham
- University Health Centre at Queen’s, 7 University Terrace, Belfast, BT7 1NP
| | - JSG Dooley
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - S Elshibly
- Department of Microbiology, Antrim Area Hospital, Antrim, BT41 2RL
| | - CE Goldsmith
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - D Fairley
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - K Jackson
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - S Lamont
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - L Jessop
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - E McCrudden
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - D McConnell
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - K McAuley
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - JP McKenna
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - PJA Moore
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - R Smithson
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - J Stirling
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - M Shields
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - JE Moore
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
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39
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Millar BC, Banks L, Bourke TW, Cunningham M, Dooley JSG, Elshibly S, Goldsmith CE, Fairley D, Jackson K, Lamont S, Jessop L, McCrudden E, McConnell D, McAuley K, McKenna JP, Moore PJA, Smithson R, Stirling J, Shields M, Moore JE. Meningococcal Disease in Northern Ireland - Past, Present & Future: MeningoNI Forum. Ulster Med J 2018; 87:83. [PMID: 29867259 PMCID: PMC5974660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 11/23/2022]
Abstract
Meningococcal disease has had devastating consequences in Northern Ireland since its first description locally in 1859. The incidence of this disease has significantly declined in recent years, however it is important to understand reasons for this changing epidemiology and to acknowledge the diagnostic and clinical management developments that have been made locally. This review aims to examine the changing face of this disease in Northern Ireland over the years, with particular reference to local disease prevention, epidemiology, diagnosis, clinical treatment and management, post-disease sequelae and the role of meningitis charities locally, in terms of patient support and research.
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Affiliation(s)
- BC Millar
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - L Banks
- Meningitis Now, Stroud, Gloucestershire GL5 3TJ
| | - TW Bourke
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - M Cunningham
- University Health Centre at Queen’s, 7 University Terrace, Belfast, BT7 1NP
| | - JSG Dooley
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - S Elshibly
- Department of Microbiology, Antrim Area Hospital, Antrim, BT41 2RL
| | - CE Goldsmith
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - D Fairley
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - K Jackson
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - S Lamont
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - L Jessop
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - E McCrudden
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - D McConnell
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - K McAuley
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - JP McKenna
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - PJA Moore
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - R Smithson
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - J Stirling
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - M Shields
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - JE Moore
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN,Correspondence to Professor John E. Moore, Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,
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40
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Millar BC, Banks L, Bourke TW, Cunningham M, Dooley JSG, Elshibly S, Goldsmith CE, Fairley D, Jackson K, Lamont S, Jessop L, McCrudden E, McConnell D, McAuley K, McKenna JP, Moore PJA, Smithson R, Stirling J, Shields M, Moore JE. Meningococcal Disease Section 1: Microbiology And Historical Perspective: MeningoNI Forum. Ulster Med J 2018; 87:84-87. [PMID: 29867260 PMCID: PMC5974661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 12/05/2022]
Affiliation(s)
- BC Millar
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - L Banks
- Meningitis Now, Stroud, Gloucestershire GL5 3TJ
| | - TW Bourke
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - M Cunningham
- University Health Centre at Queen’s, 7 University Terrace, Belfast, BT7 1NP
| | - JSG Dooley
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - S Elshibly
- Department of Microbiology, Antrim Area Hospital, Antrim, BT41 2RL
| | - CE Goldsmith
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - D Fairley
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - K Jackson
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - S Lamont
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - L Jessop
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - E McCrudden
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - D McConnell
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - K McAuley
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - JP McKenna
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - PJA Moore
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - R Smithson
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - J Stirling
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - M Shields
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - JE Moore
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN,Correspondence to Professor John E. Moore, Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD. E-mail:
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41
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Millar BC, Banks L, Bourke TW, Cunningham M, Dooley JSG, Elshibly S, Goldsmith CE, Fairley D, Jackson K, Lamont S, Jessop L, McCrudden E, McConnell D, McAuley K, McKenna JP, Moore PJA, Smithson R, Stirling J, Shields M, Moore JE. Meningococcal Disease Section 2: Epidemiology and Vaccination of Meningococcal Disease in Northern Ireland: MeningoNI Forum. Ulster Med J 2018; 87:88-93. [PMID: 29867261 PMCID: PMC5974662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/05/2018] [Indexed: 11/23/2022]
Affiliation(s)
- BC Millar
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - L Banks
- Meningitis Now, Stroud, Gloucestershire GL5 3TJ
| | - TW Bourke
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - M Cunningham
- University Health Centre at Queen’s, 7 University Terrace, Belfast, BT7 1NP
| | - JSG Dooley
- School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA
| | - S Elshibly
- Department of Microbiology, Antrim Area Hospital, Antrim, BT41 2RL
| | - CE Goldsmith
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - D Fairley
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - K Jackson
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - S Lamont
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - L Jessop
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - E McCrudden
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE
| | - D McConnell
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - K McAuley
- Meningitis Research Foundation, 71 Botanic Avenue, Belfast, BT7 1JL
| | - JP McKenna
- Department of Medical Microbiology, The Royal Group of Hospitals Belfast, BT12 6BA
| | - PJA Moore
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - R Smithson
- Northern Ireland Public Health Agency, Belfast, BT2 8BS
| | - J Stirling
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD
| | - M Shields
- The Royal Belfast Hospital for Sick Children, Belfast, BT12 6BE,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN
| | - JE Moore
- Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD,School of Biomedical Science, Ulster University, Cromore Road, Coleraine, BT52 1SA,School of Medicine, Dentistry and Biomedical Sciences, Queen’s University, University Road, Belfast, BT7 1NN,Correspondence to Professor John E. Moore, Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Belfast, BT9 7AD. E-mail:
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Cao X, Bulchandani VB, Moore JE. Incomplete Thermalization from Trap-Induced Integrability Breaking: Lessons from Classical Hard Rods. Phys Rev Lett 2018; 120:164101. [PMID: 29756937 DOI: 10.1103/physrevlett.120.164101] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Indexed: 06/08/2023]
Abstract
We study a one-dimensional gas of hard rods trapped in a harmonic potential, which breaks integrability of the hard-rod interaction in a nonuniform way. We explore the consequences of such broken integrability for the dynamics of a large number of particles and find three distinct regimes: initial, chaotic, and stationary. The initial regime is captured by an evolution equation for the phase-space distribution function. For any finite number of particles, this hydrodynamics breaks down and the dynamics becomes chaotic after a characteristic timescale determined by the interparticle distance and scattering length. The system fails to thermalize over the timescale studied (10^{4} natural units), but the time-averaged ensemble is a stationary state of the hydrodynamic evolution. We close by discussing logical extensions of the results to similar systems of quantum particles.
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Affiliation(s)
- Xiangyu Cao
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA
| | - Vir B Bulchandani
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA
| | - Joel E Moore
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Kolodrubetz MH, Nathan F, Gazit S, Morimoto T, Moore JE. Topological Floquet-Thouless Energy Pump. Phys Rev Lett 2018; 120:150601. [PMID: 29756892 DOI: 10.1103/physrevlett.120.150601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/06/2018] [Indexed: 06/08/2023]
Abstract
We explore adiabatic pumping in the presence of a periodic drive, finding a new phase in which the topologically quantized pumped quantity is energy rather than charge. The topological invariant is given by the winding number of the micromotion with respect to time within each cycle, momentum, and adiabatic tuning parameter. We show numerically that this pump is highly robust against both disorder and interactions, breaking down at large values of either in a manner identical to the Thouless charge pump. Finally, we suggest experimental protocols for measuring this phenomenon.
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Affiliation(s)
- Michael H Kolodrubetz
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
- Department of Physics, University of Texas at Dallas, Richardson, Texas 75080, USA
| | - Frederik Nathan
- Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Copenhagen 2100, Denmark
| | - Snir Gazit
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Takahiro Morimoto
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - Joel E Moore
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
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44
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Gramegna A, Millar BC, Blasi F, Elborn JS, Downey DG, Moore JE. In vitro antimicrobial activity of ceftolozane/tazobactam against Pseudomonas aeruginosa and other non-fermenting Gram-negative bacteria in adults with cystic fibrosis. J Glob Antimicrob Resist 2018; 14:224-227. [PMID: 29559421 DOI: 10.1016/j.jgar.2018.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 01/05/2018] [Accepted: 03/10/2018] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVES Pulmonary exacerbations in patients with cystic fibrosis (CF) caused by chronic Gram-negative bacterial infections are associated with reduced survival. These pathogens are usually treated with repeated courses of systemic antimicrobial agents. However, there is associated emergence of multidrug-resistant (MDR) pathogens. Ceftolozane/tazobactam (C/T) is a novel cephalosporin/β-lactamase inhibitor combination that has been demonstrated to have good activity against MDR Pseudomonas aeruginosa. METHODS In this study, C/T was compared with other commonly used intravenous antimicrobial agents against 193 non-fermenting Gram-negative bacteria isolated from CF sputum specimens, including P. aeruginosa, Achromobacter xylosoxidans, Stenotrophomonas maltophilia and Burkholderia cenocepacia. Minimum inhibitory concentrations (MICs) to C/T were determined by standard Etest assay and were interpreted according to current European Committee on Antimicrobial Susceptibility Testing (EUCAST) guidelines. RESULTS C/T had good in vitro antimicrobial activity against CF clinical isolates of P. aeruginosa in comparison with other antimicrobial agents, with the exception of colistin. C/T also had activity against S. maltophilia but was not active against B. cenocepacia or A. xylosoxidans. CONCLUSION C/T showed excellent in vitro activity against P. aeruginosa CF clinical isolates. This antimicrobial agent is a potential therapeutic option when presented with challenging MDR P. aeruginosa and S. maltophilia exacerbations. Further clinical experience and trials in CF are required to determine the place of C/T in clinical practice.
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Affiliation(s)
- A Gramegna
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Cardio-Thoracic Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Northern Ireland Regional Adult CF Unit, Belfast City Hospital, Belfast, UK.
| | - B C Millar
- Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, UK; School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - F Blasi
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Cardio-Thoracic Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - J S Elborn
- Centre for Experimental Medicine, Queen's University, Belfast, UK; Imperial College and Royal Brompton Hospital, London, UK
| | - D G Downey
- Northern Ireland Regional Adult CF Unit, Belfast City Hospital, Belfast, UK; Centre for Experimental Medicine, Queen's University, Belfast, UK
| | - J E Moore
- Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, UK; Centre for Experimental Medicine, Queen's University, Belfast, UK
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45
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Caskey S, Moore JE, McCaughan J, Rendall JC. Belfast Agar–a simple laboratory medium to separate Pseudomonas aeruginosa from pan-resistant Burkholderia cenocepacia isolated from the sputum of patients with cystic fibrosis (CF). Br J Biomed Sci 2018. [DOI: 10.1080/09674845.2017.1411018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- S Caskey
- Regional Adult Cystic Fibrosis Centre, Belfast City Hospital, Belfast, UK
| | - JE Moore
- Regional Adult Cystic Fibrosis Centre, Belfast City Hospital, Belfast, UK
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK
| | - J McCaughan
- Regional Adult Cystic Fibrosis Centre, Belfast City Hospital, Belfast, UK
- Department of Medical Microbiology, The Royal Group of Hospitals, Belfast, UK
| | - JC Rendall
- Regional Adult Cystic Fibrosis Centre, Belfast City Hospital, Belfast, UK
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Furukawa M, McCaughan J, Stirling J, Millar BC, Bell J, Goldsmith CE, Reid A, Misawa N, Moore JE. Muddy puddles - the microbiology of puddles located outside tertiary university teaching hospitals. Lett Appl Microbiol 2018; 66:284-292. [PMID: 29377174 DOI: 10.1111/lam.12856] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 11/28/2022]
Abstract
In the British Isles, the frequency of rain results in the formation of puddles on footpaths and roads in/around hospitals. No data are available demonstrating the microbiological composition of such puddles and therefore a study was undertaken to examine the microbiology of puddles in the grounds of two tertiary university-teaching hospitals (18 sites) and compared with control puddles from non-hospital rural environments (eight sites), estimating (i) total viable count; (ii) identification of organisms in puddles; (iii) enumeration of Escherichia coli: (iv) detection of Extended Spectrum β-Lactamase producing organisms and (v) direct antimicrobial susceptibility testing. A mean count of 2·3 × 103 CFU per ml and 1·0 × 109 CFU per ml was obtained for hospital and non-hospital puddles respectively. Isolates (n = 77; 54 hospital and 23 non-hospital) were isolated comprising of 23 species among 17 genera (hospital sites), where the majority (10/16; 62·5%) of genera identified were Gram-negative approximately, a fifth (20·6%) were shared by hospital and non-hospital rural samples. Escherichia coli was detected in half of the hospital puddles and under-half (37·5%) of the rural puddles extended spectrum β-lactamase organisms were not detected in any samples examined. Rainwater puddles from the hospital and non-hospital environments contain a diverse range of bacteria, which are capable of causing infections. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrated the presence of a wide diversity of bacterial taxa associated with rainwater puddles around hospitals, many of which are capable of causing human disease. Of clinical significance is the presence of Pseudomonas aeruginosa isolated from a hospital puddle, particularly for patients with cystic fibrosis. The presence of potentially disease-causing bacteria in puddles in and around hospitals identifies a new potential environmental reservoir of bacteria. Furthermore work is now needed to define their potential of entering or exiting hospital wards by contaminated footwear.
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Affiliation(s)
- M Furukawa
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,Centre for Experimental Medicine, Queen's University, Belfast, UK.,Laboratory of Veterinary Public Health, Department of Veterinary Medical Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - J McCaughan
- Department of Medical Microbiology, Royal Victoria Hospital, Belfast, UK
| | - J Stirling
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK
| | - B C Millar
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - J Bell
- Northern Ireland Regional Paediatric Cystic Fibrosis Centre, Royal Belfast Hospital for Sick Children, Royal Group of Hospital, Belfast, UK
| | - C E Goldsmith
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,Department of Medical Microbiology, Royal Victoria Hospital, Belfast, UK
| | - A Reid
- Northern Ireland Regional Paediatric Cystic Fibrosis Centre, Royal Belfast Hospital for Sick Children, Royal Group of Hospital, Belfast, UK
| | - N Misawa
- Laboratory of Veterinary Public Health, Department of Veterinary Medical Science, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - J E Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, UK.,Centre for Experimental Medicine, Queen's University, Belfast, UK.,School of Biomedical Sciences, Ulster University, Coleraine, UK.,Northern Ireland Regional Paediatric Cystic Fibrosis Centre, Royal Belfast Hospital for Sick Children, Royal Group of Hospital, Belfast, UK
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47
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Moore JE, Hirayama J, Hayashi K, Mason C, Coulter W, Matsuda M, Goldsmith CE. Examination of 16S-23S rRNA intergenic spacer region (ISR) heterogeneity in a population of clinical Streptococcus pneumoniae- a new laboratory epidemiological genotyping tool to aid outbreak analysis. Br J Biomed Sci 2018; 75:95-97. [DOI: 10.1080/09674845.2017.1382025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- JE Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University of Belfast, Royal Group of Hospitals, Belfast, Northern Ireland, UK
- School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, UK
| | - J Hirayama
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK
- Laboratory for Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - K Hayashi
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK
- Laboratory for Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - C Mason
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University of Belfast, Royal Group of Hospitals, Belfast, Northern Ireland, UK
| | - W Coulter
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University of Belfast, Royal Group of Hospitals, Belfast, Northern Ireland, UK
| | - M Matsuda
- Laboratory for Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - CE Goldsmith
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Belfast, Northern Ireland, UK
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Mitsuhashi N, Matsuda M, Murayama O, Millar BC, Moore JE. Sequencing and analysis of the 16S rDNA of thermophilic Campylobacter lari and their reliability for molecular discrimination. Br J Biomed Sci 2018; 62:34-7. [PMID: 15816212 DOI: 10.1080/09674845.2005.11978069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- N Mitsuhashi
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Fuchinobe 1-17-71, Sagamihara 229-8501, Japan
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Xu J, Moore JE, Murphy PG, Millar BC, Redmond AOB, Elborn JS. Molecular (PCR) detection of Pseudomonas spp. other than P. aeruginosa directly from the sputum of adults and children with cystic fibrosis. Br J Biomed Sci 2018; 61:147-9. [PMID: 15462262 DOI: 10.1080/09674845.2004.11978135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Xu
- Northern Ireland Public Health Laboratory, Department of Bacteriology, Belfast City Hospital, Lisburn Road, Northern Ireland, UK
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Moore JE, Nagano Y, Millar BC, McCalmont M, Elborn JS, Rendall J, Pattison S, Dooley JSG, Goldsmith CE. Environmental persistence of Pseudomonas aeruginosa and Burkholderia multivorans in sea water: preliminary evidence of a viable but non-culturable state. Br J Biomed Sci 2018; 64:129-31. [PMID: 17910284 DOI: 10.1080/09674845.2007.11978100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J E Moore
- Northern Ireland Public Health Laboratory, Department of Bacteriology.
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